14_D6 TestRpt p2

FCC ID: 2ALJXD8

Test Report

Download: PDF
FCCID_4280385

Report No.: AGC02764190302FE03 Page 49 of 70 EUT Bluetooth speaker Model Name D6 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 3 Antenna Vertical PK AV RESULT: PASS Note: The factor had been edited in the “Input Correction” of the Spectrum Analyzer. So the Amplitude of test plots is equal to Reading level plus the Factor in dB. Use the A dB(μV) to represent the Amplitude. Use the F

Report No.: AGC02764190302FE03 Page 50 of 70 dB(μV/m) to represent the Field Strength. So A=F. All test modes had been pre-tested. The GFSK modulation is the worst case and recorded in the report.

Report No.: AGC02764190302FE03 Page 51 of 70 11. NUMBER OF HOPPING FREQUENCY 11.1. MEASUREMENT PROCEDURE The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span: The frequency band of operation. Depending on the number of channels the device supports, it may be necessary to divide the frequency range of operation across multiple spans, to allow the individual channels to be clearly seen. 2. RBW: To identify clearly the individual channels, set the RBW to less than 30% of the channel spacing or the 20 dB bandwidth, whichever is smaller. 3. VBW ≥ RBW. Sweep: Auto. Detector function: Peak. Trace: Max hold. 4. Allow the trace to stabilize. 11.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) Same as described in section 8.2 11.3. MEASUREMENT EQUIPMENT USED The same as described in section 6 11.4. LIMITS AND MEASUREMENT RESULT MEASUREMENT TOTAL NO. OF LIMIT (NO. OF CH) RESULT (NO. OF CH) HOPPING CHANNEL >=15 79 PASS TEST PLOT FOR NO. OF TOTAL CHANNELS Note: The GFSK modulation is the worst case and recorded in the report.

Report No.: AGC02764190302FE03 Page 52 of 70 12. TIME OF OCCUPANCY (DWELL TIME) 12.1. MEASUREMENT PROCEDURE The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span: Zero span, centered on a hopping channel. 2. RBW shall be≤channel spacing and where possible RBW should be set >> 1 / T, where T is the expected dwell time per channel. 3. Sweep: As necessary to capture the entire dwell time per hopping channel; where possible use a video trigger and trigger delay so that the transmitted signal starts a little to the right of the start of the plot. The trigger level might need slight adjustment to prevent triggering when the system hops on an adjacent channel; a second plot might be needed with a longer sweep time to show two successive hops on a channel. 4. Detector function: Peak. Trace: Max hold. 5. Use the marker-delta function to determine the transmit time per hop. 6. Repeat the measurement using a longer sweep time to determine the number of hops over the period specified in the requirements. The sweep time shall be equal to, or less than, the period specified in the requirements. Determine the number of hops over the sweep time and calculate the total number of hops in the period specified in the requirements, using the following equation: (Number of hops in the period specified in the requirements) = (number of hops on spectrum analyzer) × (period specified in the requirements / analyzer sweep time) 7. The average time of occupancy is calculated from the transmit time per hop multiplied by the number of hops in the period specified in the requirements. 12.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) Same as described in section 8.2 12.3. MEASUREMENT EQUIPMENT USED The same as described in section 6 12.4. LIMITS AND MEASUREMENT RESULT Time of Pulse Number of hops in the period Sweep Time Limit Channel for DH5 specified in the requirements (ms) (ms) (ms) Low 2.892 30*4 347.040 400 Middle 2.900 24*4 278.400 400 High 2.908 22*4 255.904 400 Note: The 8-DPSK modulation is the worst case and recorded in the report.

Report No.: AGC02764190302FE03 Page 53 of 70 TEST PLOT OF LOW CHANNEL

Report No.: AGC02764190302FE03 Page 54 of 70 TEST PLOT OF MIDDLE CHANNEL

Report No.: AGC02764190302FE03 Page 55 of 70 TEST PLOT OF HIGH CHANNEL

Report No.: AGC02764190302FE03 Page 56 of 70 13. FREQUENCY SEPARATION 13.1. MEASUREMENT PROCEDURE The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span: Wide enough to capture the peaks of two adjacent channels. 2. RBW: Start with the RBW set to approximately 30% of the channel spacing; adjust as necessary to best identify the center of each individual channel. 3. Video (or average) bandwidth (VBW) ≥ RBW. 4. Sweep: Auto. e) Detector function: Peak. f) Trace: Max hold. g) Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. 13.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) Same as described in section 6.2 13.3. MEASUREMENT EQUIPMENT USED The same as described in section 6.3 13.4. LIMITS AND MEASUREMENT RESULT CHANNEL LIMIT RESULT CHANNEL SEPARATION KHz KHz Pass CH01-CH02 1000 >=25 KHz or 2/3 20 dB BW TEST PLOT FOR FREQUENCY SEPARATION Note: The 8-DPSK modulation is the worst case and recorded in the report.

Report No.: AGC02764190302FE03 Page 57 of 70 14. FCC LINE CONDUCTED EMISSION TEST 14.1. LIMITS OF LINE CONDUCTED EMISSION TEST Maximum RF Line Voltage Frequency Q.P.( dBuV) Average( dBuV) 150kHz~500kHz 66-56 56-46 500kHz~5MHz 56 46 5MHz~30MHz 60 50 Note: 1. The lower limit shall apply at the transition frequency. 2. The limit decreases linearly with the logarithm of the frequency in the range 0.15 MHz to 0.50 MHz. 14.2. BLOCK DIAGRAM OF LINE CONDUCTED EMISSION TEST EUT & Support Units

Report No.: AGC02764190302FE03 Page 58 of 70 14.3. PRELIMINARY PROCEDURE OF LINE CONDUCTED EMISSION TEST 1. The equipment was set up as per the test configuration to simulate typical actual usage per the user’s manual. When the EUT is a tabletop system, a wooden table with a height of 0.8 meters is used and is placed on the ground plane as per ANSI C63.10 (see Test Facility for the dimensions of the ground plane used). When the EUT is a floor-standing equipment, it is placed on the ground plane which has a 3-12 mm non-conductive covering to insulate the EUT from the ground plane. 2. Support equipment, if needed, was placed as per ANSI C63.10. 3. All I/O cables were positioned to simulate typical actual usage as per ANSI C63.10. 4. All support equipments received AC120V/60Hz power from a LISN, if any. 5. The EUT received DC 5V power from adapter which received AC120V/60Hz power from a LISN. 6. The test program was started. Emissions were measured on each current carrying line of the EUT using a spectrum Analyzer / Receiver connected to the LISN powering the EUT. The LISN has two monitoring points: Line 1 (Hot Side) and Line 2 (Neutral Side). Two scans were taken: one with Line 1 connected to Analyzer / Receiver and Line 2 connected to a 50 ohm load; the second scan had Line 1 connected to a 50 ohm load and Line 2 connected to the Analyzer / Receiver. 7. Analyzer / Receiver scanned from 150 kHz to 30MHz for emissions in each of the test modes. 8. During the above scans, the emissions were maximized by cable manipulation. 9. The test mode(s) were scanned during the preliminary test. Then, the EUT configuration and cable configuration of the above highest emission level were recorded for reference of final testing. 14.4. FINAL PROCEDURE OF LINE CONDUCTED EMISSION TEST 1. EUT and support equipment was set up on the test bench as per step 2 of the preliminary test. 2. A scan was taken on both power lines, Line 1 and Line 2, recording at least the six highest emissions. Emission frequency and amplitude were recorded into a computer in which correction factors were used to calculate the emission level and compare reading to the applicable limit. If EUT emission level was less –2dB to the A.V. limit in Peak mode, then the emission signal was re-checked using Q.P and Average detector. 3. The test data of the worst case condition(s) was reported on the Summary Data page.

Report No.: AGC02764190302FE03 Page 59 of 70 14.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST Line Conducted Emission Test Line 1-L

Report No.: AGC02764190302FE03 Page 60 of 70 Line Conducted Emission Test Line 2-N RESULT: PASS Note: All the test modes had been tested, the mode 1 was the worst case. Only the data of the worst case would be record in this test report.

Report No.: AGC02764190302FE03 Page 61 of 70 APPENDIX A: PHOTOGRAPHS OF TEST SETUP RADIATED EMISSION TEST SETUP BELOW 1GHZ RADIATED EMISSION TEST SETUP ABOVE 1GHZ

Report No.: AGC02764190302FE03 Page 62 of 70 CONDUCTED EMISSION TEST SETUP

Report No.: AGC02764190302FE03 Page 63 of 70 APPENDIX B: PHOTOGRAPHS OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT

Report No.: AGC02764190302FE03 Page 64 of 70 FRONT VIEW OF EUT BACK VIEW OF EUT

Report No.: AGC02764190302FE03 Page 65 of 70 LEFT VIEW OF EUT RIGHT VIEW OF EUT

Report No.: AGC02764190302FE03 Page 66 of 70 INTERFACE VIEW OF EUT OPEN VIEW OF EUT-1

Report No.: AGC02764190302FE03 Page 67 of 70 OPEN VIEW OF EUT-2 OPEN VIEW OF EUT-3

Report No.: AGC02764190302FE03 Page 68 of 70 INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2

Report No.: AGC02764190302FE03 Page 69 of 70 INTERNAL VIEW OF EUT-3 Antenna INTERNAL VIEW OF EUT-4

Report No.: AGC02764190302FE03 Page 70 of 70 INTERNAL VIEW OF EUT-5 ----END OF REPORT----


Document Created: 2019-05-16 09:02:20
Document Modified: 2019-05-16 09:02:20
© 2025 FCC.report
This site is not affiliated with or endorsed by the FCC